1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
| package com.example.login;
import com.google.common.collect.Lists;
import com.google.common.io.ByteStreams;
import com.google.common.io.Closer;
import com.google.common.io.Files;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.*;
import java.util.stream.IntStream;
public class Test {
public static void main(String[] args) throws ExecutionException, InterruptedException {
ExecutorService executorService = Executors.newFixedThreadPool(10);
System.out.println("[开始]:"+new Date().toLocaleString());
IntStream.rangeClosed(1,10).parallel().forEach(e->{
Future<String> submit = executorService.submit(new downloadThread(e));
});
}
public static String downloadThreadDo(Integer count){
Closer closer = Closer.create();
try {
String url = "http://xxxxxx/file/tomcatWebPackage.zip";
File imageDir = new File("d://Temp//");
File imageFile = new File(imageDir, "tomcatWebPackage"+count+".zip");
InputStream in = closer.register(new URL(url).openStream());
Files.write(ByteStreams.toByteArray(in), imageFile);
} catch(Exception ex) {
throw closer.rethrow(e);
} finally {
closer.close();
}
System.out.println("["+count+"][结束]:"+new Date().toLocaleString());
return "success:"+count;
}
static class downloadThread implements Callable<String> {
Integer count;
public downloadThread(Integer count) {
this.count=count;
}
@Override
public String call() {
return downloadThreadDo(count);
}
}
}
|